Image analysis – Image enhancement or restoration – Image filter
Reexamination Certificate
2010-10-15
2011-10-18
Bhatnagar, Anand (Department: 2624)
Image analysis
Image enhancement or restoration
Image filter
C382S169000, C382S173000, C382S190000, C382S282000, C358S002100, C358S003010, C358S003230, C358S003240, C358S448000, C348S222100, C348S254000, C348S571000, C348S671000
Reexamination Certificate
active
08041143
ABSTRACT:
One embodiment is a method for suppressing background inaccuracies in binary to grayscale image conversion. A binary image is converted to a grayscale image using a neighbor map. An image enhancement function is applied to the grayscale image to suppress background inaccuracies in the grayscale image. Another embodiment is method for converting a binary pixel of a binary image to a grayscale pixel of a grayscale image and suppressing noise in the grayscale image using selective filtering of the binary image. Another embodiment is a method for converting a binary image to a first grayscale image and suppressing noise in the first grayscale image to produce a noise suppressed grayscale image using selective filtering of the first grayscale image.
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Cassidy John Christopher
Lee Chia-Hao
Nagarajan Ramesh
Tse Francis Kapo
Wu John W.
Bhatnagar Anand
Bloom Nathan
Pillsbury Winthrop Shaw & Pittman LLP
Xerox Corporation
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